Likely yes. If you are actually interested in sectors I would suggest you head to your library and look at Value Line as there premise is based on diversification, sectors/industries and then selections within those categories. So it is applicable if you are interested in individual companies or etfs.

No! Avoid sector funds. That is actively picking part of the market. You want a passive approach that owns the whole market. There is absolutely no way to predict that consumer staples will outperform the market and could possibly underperform it. If they are predicted to do well they are already priced accordingly. If you want to beat the market you might tilt to small cap value but that's no guarantee either.https://www.bogleheads.org/wiki/Three-fund_portfolioviewtopic.php?f=10&t=238879

Another general rule is that you're allowed to gamble a little bit, as long as you limit it to no more than 5% of your total portfolio.

So, technically, you can put 5% of your portfolio into Consumer Staples and still be within BH guidelines, as long as the rest of your portfolio is in broad index funds. I may or may not have done exactly that last week.

-consumer staples have been saved by disruption so far, because their scale makes them nearly impossible to compete with

-unless you create an eco-system to go after them directly

-Amazon has create such an eco-system

Unilever and Procter & Gamble are moving onto Amazon's marketplace and are possibly buying advertising slots from them. Amazon don't pay for their platform and can advertise on it for free. This means that they will be able to severely undercut consumer staples with their Amazon Basics ranges across all product ranges.

The best example of this happening already is the nappies on Amazon, Huggies and Pampers are the best two brands - Amazon Basics is the third.

Marketeer investing as a hobby. Interested in modern takes on value investing, passive investing and general contrarianism.